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Belfast Intl

$681+ Cheap flights from Washington to Belfast Intl (BFS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BFS
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheap flight deals from Washington to Belfast Intl

Keep the following information in mind while searching for Washington to Belfast Intl flight deals. Data was last updated septiembre 15, 2025.

Round-trip from

$681
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$985
From Washington to Belfast Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Washington to Belfast Intl

Cheapest flights from Washington to Belfast Intl
Explore the most affordable flight options available from Washington to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 15, 2025.

This Trip.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/287:12 amPDX - BFS
2 stops23h 13mMultiple Airlines
mar. 11/48:55 pmBFS - PDX
2 stops47h 11mMultiple Airlines
Deal found 9/13$681
This Mytrip deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/133:45 pmSEA - BFS
2 stops20h 40mMultiple Airlines
lun. 10/206:10 amBFS - SEA
2 stops22h 30mMultiple Airlines
Deal found 9/15$723
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/17:00 pmSEA - BFS
2 stops17h 35mMultiple Airlines
mié. 10/86:10 amBFS - SEA
2 stops22h 30mMultiple Airlines
Deal found 9/14$770

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Belfast Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 15, 2025.
Use the filters below to find and compare flights from Washington to Belfast Intl Airport that are best for you.

Fly from

Washington

Fly to

Belfast Intl

Route

Depart

Return

Price

PortlandBelfast

PDX - BFS

PDXBFS

Portland

mar. 10/28

7:12 am-1:25 pm

2 stops23h 13m

Belfast Intl

mar. 11/4

8:55 pm-12:06 pm

2 stops47h 11m

$681

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

lun. 10/13

3:45 pm-8:25 pm

2 stops20h 40m

Belfast Intl

lun. 10/20

6:10 am-8:40 pm

2 stops22h 30m

$723

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

mié. 10/1

7:00 pm-8:35 pm

2 stops17h 35m

Belfast Intl

mié. 10/8

6:10 am-8:40 pm

2 stops22h 30m

$770

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Best time to book a flight from Washington to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Belfast Intl Airport

What is the cheapest time of day to fly from WA to BFS?

Find hourly flight availability from Washington to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Belfast Intl Airport as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Washington to Belfast Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Washington to Belfast Intl that include hotel bookings?

    Yes. In addition to deals on Washington to Belfast Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Belfast Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Belfast Intl.

  • Can I find deals for business class flights from Washington to Belfast Intl?

    Yes. Cheapflights offers flight deals from Washington to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Belfast Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from State of Washington to Belfast Intl Airport (average of $657). Flying from State of Washington to Belfast Intl Airport in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Washington to Belfast Intl

Discover the top airline that operate flights from Washington to Belfast Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$737Average$951FlexibilityNo cancel feeOn-time70%

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